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Cornerstone · Grades 3–5 Keystones #1 20 January 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 20 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x + 6 = 30

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 286 in the ratio 3:4:4

    Answer: 78, 104 and 104
  5. 5. Statistics Mean

    Calculate the mean of: 30, 40, 14, 32, 32, 24, 7, 43

    Answer: 27.75

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